The Nut,plain,clinch, cataloged under National Stock Number 5310-01-665-3973, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Bollhoff Inc. Dba Bollhoff Rivnut Inc. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-665-3973 |
| Primary Part Number | SM4P6.85TZ |
| Item Name | Nut,plain,clinch |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Bollhoff Inc. Dba Bollhoff Rivnut Inc |
| Status | ACTIVE |
| Width Across Flats | 11.1 MILLIMETERS NOMINAL MM |
| Distance From Centerline to Flat | 3.06 MILLIMETERS NOMINAL MM |
| Thread Series | M |
| Thread Pitch in Millimeters | 0.7 |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 4.0 MILLIMETERS MM |
| Pilot Width | 6.12 MILLIMETERS NOMINAL MM |
| Pilot Length | 19.94 MILLIMETERS NOMINAL MM |
| Nut Height | 20.8 MILLIMETERS NOMINAL MM |
| Nut Style | CLINCH |
| Material | STEEL COMP 1010 OR STEEL COMP 1008 OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| SM4P6.85TZ PRIMARY | Bollhoff Inc. Dba Bollhoff Rivnut Inc (USA) |
| Reference | Meaning |
|---|---|
| 12542744-001 | 7/2 Vendor item drawing reference U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 5310-01-665-3973 is a Nut,plain,clinch, manufactured by Bollhoff Inc. Dba Bollhoff Rivnut Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-665-3973 has 1 manufacturer part number on file: SM4P6.85TZ (Bollhoff Inc. Dba Bollhoff Rivnut Inc).
Key specifications for SM4P6.85TZ: Width Across Flats: 11.1 MILLIMETERS NOMINAL MM; Distance From Centerline to Flat: 3.06 MILLIMETERS NOMINAL MM; Thread Series: M; Thread Pitch in Millimeters: 0.7. 11 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.